Home / 320,670.15-442,331.96-211,775.48

Finding the Fourth Proportional to 320,670.15, 442,331.96 and 211,775.48

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Solution

The fourth proportional to 320,670.15, 442,331.96 and 211,775.48 is: 292,122.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,670.15 : 442,331.96 = 211,775.48 : x
  2. Step 2: Convert to fraction form
    320,670.15/442,331.96 = 211,775.48/x
  3. Step 3: Cross multiply
    320,670.15x = 442,331.96 × 211,775.48
  4. Step 4: Simplify right side
    320,670.15x = 93,675,063,148.34
  5. Step 5: Solve for x
    x = 93,675,063,148.34/320,670.15
  6. Step 6: Final answer
    x = 292,122.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.